QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

Earthquake near Naranjito, PR

No earthquake was likely felt in Naranjito in the 24 hours to 5:30 pm AST (21:30 UTC). The last one was M 4.8, 84 km (52 mi) WSW, at 9:19 am AST on 18 September 2026, estimated intensity III (weak) in town; 86 felt reports to USGS. Every earthquake near Naranjito

This page: a magnitude 2.9 earthquake was recorded 3 km (2 mi) north of Naranjito, PR, at 4:46 am AST on 23 February 2019 (08:46 UTC), 112 km deep.

USGS: 3 km N of Naranjito, Puerto Rico

10 km (6 mi) WSW of Bayamón, PR

4:46 am AST, Feb 23, 2019 · · 112 km deep · released about 780 lb of TNT

Every earthquake near Naranjito Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Toa Alta Municipio 4 kmNaranjito Municipio 5 kmBayamón Municipio 8 kmCorozal Municipio 9 kmComerío Municipio 12 kmGuaynabo Municipio 14 kmAguas Buenas Municipio 15 kmToa Baja Municipio 15 kmVega Alta Municipio 15 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
4:46 am AST on 23 February 2019 ()
Where
3 km (2 mi) north of Naranjito, PR · earthquakes near Naranjito
Magnitude
M 2.9 (md)
Depth
112 km below the surface
Felt
no reports yet
Nearest
Toa Alta Municipio, 4 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2741 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Naranjito, 3 km away, the estimate is intensity I (not felt). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: H. Rivera Colon, Galateo, Pájaros, Toa Alta, Mucarabones, Río Lajas.

How big was it?

This earthquake released about 780 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 19,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 14,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.2× the energy of this one
  4. This earthquake M 2.9 about 780 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 5.8 12 km N of Garrochales, Puerto Rico · 42 km NW of this epicentre
  2. 5.1 3 km W of Aguas Buenas, Puerto Rico · 14 km SE of this epicentre
  3. 5.0 3 km N of Brenas, Puerto Rico · 21 km NNW of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 18.3311, -66.2455. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Toa Alta Municipio, PR 4 km (2 mi) N earthquakes near Toa Alta Municipio
Naranjito Municipio, PR 5 km (3 mi) S earthquakes near Naranjito Municipio
Bayamón Municipio, PR 8 km (5 mi) ENE earthquakes near Bayamón Municipio
Corozal Municipio, PR 9 km (6 mi) WSW earthquakes near Corozal Municipio
Comerío Municipio, PR 12 km (8 mi) SSE earthquakes near Comerío Municipio
Guaynabo Municipio, PR 14 km (9 mi) E earthquakes near Guaynabo Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

48 earthquakes have been recorded within 50 km since this one.

  1. 1.7 1 km SSW of Jobos, Puerto Rico
  2. 1.7 1 km NE of Jobos, Puerto Rico
  3. 1.6 0 km E of Jobos, Puerto Rico
  4. 2.0 0 km ESE of Jobos, Puerto Rico
  5. 1.8 1 km E of Jobos, Puerto Rico
  6. 1.6 3 km E of La Plena, Puerto Rico
  7. 1.6 3 km E of La Plena, Puerto Rico
  8. 2.3 0 km SW of Jobos, Puerto Rico
  9. 2.2 4 km SSW of Las Piedras, Puerto Rico
  10. 1.6 Puerto Rico region
  11. 1.6 1 km NNE of Jobos, Puerto Rico
  12. 1.6 0 km ESE of Jobos, Puerto Rico
  13. 2.0 0 km WSW of Jobos, Puerto Rico
  14. 2.2 0 km NNE of Jobos, Puerto Rico
  15. 2.5 0 km NNW of Jobos, Puerto Rico

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.